These pesky creatures largely inhabit the desert regions. Although other species are known to exist, the desert leapers are the most common. Leapers get their name from their tremendous leaping ability. As a result, these extremely agile creatures make for difficult targets. Leapers are versatile animals and the desert variety has an extremely slow resting metabolism to minimize water use and storage. The harsh environment of the Aranoch, however, leaves little room for mistakes, and these creatures never pass up the opportunity to eat or drink. Packs sighting a potential meal leave their resting spots and work together to bring down their quarry with great tenacity.

Leapers are aptly-named, since they regularly propel themselves in wild hopping attacks. They also engage in ankle-slashing melee combat, and can even deal poison damage on Nightmare and Hell difficulties.

Killing Leapers can be time-consuming, since they flop backwards when they are hit, moving out of melee range each time. They also tend to run if chased. It's best to stand and wait for them to come to you, and try to knock them back into a wall or other object so they will hold still and die. Leapers can be frozen, locking them into place, and they are highly susceptible to ranged attacks, such as Strafe.

Leapers cannot be Revived by the Necromancer's spell, though skeletons can be raised from their corpses.

Regen Rate tells what % of a monster's hit points are recovered per second. Standard is 1.2/sec.

Blocking values are assigned to every monster in the game, but the ability is seldom enabled, so most monsters can not block (Hence the blocking % given on most Diablo II monster pages, including Blizzard's, is inaccurate.) When enabled, blocking tells what % of successful, blockable attacks will not damage the monster. Monsters need not carry a shield to block.

Drain Effectiveness tells what % of a character's mana and life steal apply to that monster. 100 is all, 0 is none.

Chill Effectiveness tells what % of a character's cold length applies to the monster. 100 is all, 0 is no freeze/chill at all.